In a small bowl, stir together mayonnaise and next 4 ingredients. Spread mayonnaise mixture onto cut side of all bread halves, top each with cheeses, salami, and next 4 ingredients. Sprinkle with pepper, and garnish with parsley, if desired. Serve immediately.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/open-faced-muffaletta-sandwich-recipe/